Co-efficient of adhesion is________________-?

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Which of the following drives is suitable for mines where explosive gas exists ?

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The pulsating torque exerted by steam locomotives causes which of the following ?

A. Jolting and skidding B. Hammer blow C. Pitching D. All of the above...

The resistance encountered by a train in motion is on account of_________________?

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In case of _________________ free running and coasting periods are generally long ?

A. main-line service B. urban service C. sub-urban service D. all of the above...

Which of the following happens in Kando system ?

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